1. [词海垂钓]从词典中“钓”出一串同根词吧。
① ab-
② con-
2. [同义相连]将左栏中的单词和右栏中相对应的词义连接起来。
① projection a.抛弃；拒绝
② subjection b.发射；规划
③ ejection c.沮丧；气馁
④ rejection d.隶属；征服
⑤ dejection e.驱逐；射出
3. [寻根问底]指出下列单词的词根并领会其词义的由来。
① interjacent a.处在中间的
② ejaculate v.射出液体；突然喊出
ejaculator n.射出者；突然叫喊者
ejecta n.喷出物；废物（提示：e-
③ subjacent a.低下的；下层的
④ interject v.突然插入
interjection n.插入物；感叹词
⑤ objection n.厌恶；反对
objectionable a.令人不愉快的
⑥ traject v.抛越；扔过
trajectory n.弹道；轨道，轨迹（提示：tra-
4. [节外生枝] ject有个异体jet，以下是主要的派生词。请分析其词义。
① jet v.喷出；喷射 n.喷射；喷射口
② jettison v.（在紧急情况下）将货物抛出船外；抛弃；丢弃
③ jetsam n.（在紧急情况下）抛出船外的货物；无用的弃物
④ jetty n.码头
47. junct, join [L]=to connect连接
在常用词conjunction，juncture，disjunctive中，词根junct来自拉丁动词jungere的动名词形式junctum，其意思相当于to connect或to join，即“连接”。常用词join其实是拉丁词根junct在法语中的变形。作为英语词根，join主要构成动词。
conjunction [con-(com-)=together一起；junct=to connect连接；-ion n.=the act or state表行为或状态→“connecting together连接在一起”→] n.① connection;association连接；结合：We'll have a party in conjunction with Class One.我们要和一班联合开晚会。②word connecting two grammatical elements together连词：“But”is a conjunction.“But”是个连词。
▽conjunctive [con-;junct;-ive a.] a.连接的；联系的
junctrure [junct=to join连接；-ure n.=the state表行为状态→“joining of places or times地点或时间相连的状态”→] n.① place where several pieces of land joined交界处：the juncture of three provinces三省交界处② point of time which joins affairs关头：an important juncture in history历史的重要关头
disjunctive [dis-=not不；junct=to connect 连接；-ive a.=having the quality有……性质的→“not connecting不连接的”→] a.① tending to separate分离的：disjunctive element分离因素② disjoining the sense, or making an adverse sense when uniting sentences转折的：disjunctive conjunction转折连词
injunction [in-=in入；junct=to join连；-ion n.=the act表行为→“the act of joining in or butting in legally合法的牵连进去或介入”→] n. act of ordering authoritaively命令，指令：an injunction against strikes禁止罢工的命令
▽injunctive [in-;junct;-ive a.] a.命令的；指令的
adjunct [ad-=to于；junct=to join连接→“being joined to a main body被连接在主体上”→]Ⅰa. subordinate;secondary附属的；次要的：an adjunct phrase附加语→Ⅱn. things joined or added, but subordinate附属物，附属品：The chain is an adjunct to the watch.表链是挂表的附属品。
junction [junct=to connect连接；-ion n.=the state表状态→“the state of connecting连接的状态”→] n. place where lines or routes connect or cross线路的接合点；交叉点：the junction of two highways两条公路的交会点
subjunctive [sub-=under在……之下；junct=to join连接；-ive a.=having the quality有……性质的→“joining under a certrain condition连接在某种条件之下的”→] a. joining to a sentence, expressing condition, hypothesis, possibility虚拟的（添在句子上用以表示条件、假设、可能的）：subjunctive mood虚拟语气
adjoin [ad-=to于；join=to join连接→“to join to与……相连”→] v. be next to and often connected with贴近；毗连：Our school adjoins the fields.我们的校园与农田相连。
rejoin [re-=again再；join v.连接→] v. join again after being separated重新连接：to rejoin the severed arm断臂再植
subjoin [sub-=under在……之下；join=to join连接→“to join under连在下面，添加上去”→] v. add at the end or afterwards增补；附加：to subjoin a postscript to a letter在信末加上附言
